AI Readability vs Readability Formulas
| AI Readability | Readability Formulas | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | Web | extension, macOS, Web, Windows |
| Free plan | Yes | Yes |
| Sentence complexity | Yes | — |
| Plain-language rewrites | Yes | — |
| Input formats | text | — |
Both are listed in Best AI Readability Checkers. On Specifiction, Readability Formulas scores higher on our published basis.